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Camera glass and megapixels
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Feb 22, 2016 11:40:52   #
Cdouthitt Loc: Traverse City, MI
 
travelwp wrote:
Yes, an A7RII with a 70-200 F2.8 would look silly and, in my opinion, a heavy Nikon body would be easier to handle big and heavy lenses.

My reason for looking at the A7RII is strictly for use with a 50mm lens. Lately I have been shooting almost everything with the 50mm and would purchase a small body with a 50mm if the combination produced superb results.


Ahhh...gotcha...
Then yes, the A7Rii and fast prime or two would be back saver over the 810 and comparative lenses...just don't forget to add an extra battery to extend shooting time.

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Feb 22, 2016 11:44:07   #
stan0301 Loc: Colorado
 
There is a third side to this question--photo paper won't accept more than about 240 dpi no matter what you throw at it
Stan

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Feb 22, 2016 11:47:08   #
travelwp Loc: New Jersey
 
Cdouthitt wrote:
just don't forget to add an extra battery to extend shooting time.


YES, that was one of the negatives about the AR7II. The difficulty is that as soon as you want more things, like a bigger battery, then the whole camera deal gets physically bigger. I agree.

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Feb 22, 2016 12:05:22   #
Bill_de Loc: US
 
stan0301 wrote:
There is a third side to this question--photo paper won't accept more than about 240 dpi no matter what you throw at it
Stan


My Epson 3880 says it prints 2880 dot per inch. Where do all those extra dots go? I'm confused


---

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Feb 22, 2016 12:16:55   #
Cdouthitt Loc: Traverse City, MI
 
Bill_de wrote:
My Epson 3880 says it prints 2880 dot per inch. Where do all those extra dots go? I'm confused


---


I think you're confusing ppi vs dpi...

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Feb 22, 2016 12:33:58   #
Reinaldokool Loc: San Rafael, CA
 
boberic wrote:
I know that this doesn't answer your question- but unless you print to large dimensions (larger than 16 by 24 ) you can't tell the difference between 20-36- or 50 megapixels. (unless you agressively crop the lower megapixel image)


:thumbup: :thumbup: :thumbup:

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Feb 22, 2016 12:48:38   #
SharpShooter Loc: NorCal
 
travelwp wrote:
As an old guy, I had to chuckle reading this. It reminded me of years ago when Lee Iacocca said: “How much clean air do we need”.

Your photo is remarkably sharp, there is no argument there. What I still question is, what if your lens had a rating that would make your photo result 24 megapixels instead of 50 megapixels. Does that mean that your photo would have the same sharpness as a 24 megapixel camera with a perfect lens?

If the answer is yes, what are the reasons for 50 megapixels, would it be the ability to crop with less loss of resolution? What else?

Would you agree that lens technology lags behind sensor technology?
As an old guy, I had to chuckle reading this. It ... (show quote)


Ok T, here's my answer. Since I'm absolutely sure you are right.
What would be cheaper to gain the same exact results...., one $3500 body and a bag full of cheap lenses worth $3000 or..., a $2000, 24mp body and a bag with $50,000 worth of lenses. I'm sure most of will shoot with the former since for most of us, we will never shoot with a full arsenal of Zeiss glass!!!
And then, if we did, we'd have to be puttering along on manual with little more ability than to chase bugs and shoot landscape....., both about as exciting as being passed out after a long binge!!!! :lol:
SS

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Feb 22, 2016 13:09:13   #
Pro1
 
You are 100% correct!! The lens is the more important than the camera. I have an old Nikon 5000 camera (12MP) and I have shots taken with the Nikor 18-55 zoom lens (the original one made, not the current one make with plastic) and the pictures are sharp.

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Feb 22, 2016 13:41:38   #
forjava Loc: Half Moon Bay, CA
 
" Your question is not going to result in an answer - but you will get lots of great opinions."

Here is a different sort of answer to your question.

There is an article featuring Nikon's lens designer, Sato, now, looking to the future. He recommends a pre-AI lens (I just got it in a post-AI version) as a star performer. Sato-san is answering your resolution question.

There is sooo much erroneous content about lenses on the web, maybe including this comment, that it is useful to carefully and repeatedly read what the people who know most about lens quality are saying. The problem is, they cannot say enough.

Gene51 wrote:
Where did you read that? You do realize you can't believe everything you read on the internet.

Lens image quality is a combination of contrast and acutance, and both values change with the fstop and distance to subject. There are no hard limits on acutance or contrast - some subjects have lots of both and others not. This is a pure guess, but I would imagine that even a 100mp full frame camera would do a good lens justice.

Now, there are lots of crappy lenses out there - my favorite crappy lens is the Nikon 28-300. On a D800 or comparable camera it is pretty awful - and the camera does expose and to a degree amplify it's flaws. That lens is ok on a 12 mp camera, but when I put each of 3 different copies on my D800, I thought they had all been dropped.

A lot of people love that lens - I can't understand that. Even Nikon cautions D800 owners that it will not produce the best images on that body, and as such have not included it on the list of recommended lenses for that camera.

Your question is not going to result in an answer - but you will get lots of great opinions.
Where did you read that? You do realize you can't ... (show quote)

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Feb 22, 2016 13:45:36   #
Bill_de Loc: US
 
Cdouthitt wrote:
I think you're confusing ppi vs dpi...


Stan said DPI, I said Dots per inch, and my printer says Dots per inch.

I'm responding to Stan.


---

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Feb 22, 2016 13:56:19   #
forjava Loc: Half Moon Bay, CA
 
Here's the URL and quotation for my above post:
http://nikkor.com/technology/02.html

Sato
Actually you would be surprised by what nice of photos even the older NIKKOR lenses can take. It's almost like our forerunners who designed these lenses knew that eventually cameras like the D810 would appear so they made them adaptable. Just look at the Auto NIKKOR from the Nikon F era. I recommend the Micro-NIKKOR Auto 55mm f/3.5, for example. While some users may prefer today’s modern lenses, you may be surprised at the fact that the lens still does its work perfectly. Our predecessors definitely had some insight into the future. They didn't have the tools back then, so they tried to make everything as over-spec as they could. If you look back over the design records left by our predecessors, you can see that there are entries regarding attempts to design lenses in order to reach theoretical resolutions. Advanced design concepts like this have been used in NIKKOR lenses for decades.

forjava wrote:
" Your question is not going to result in an answer - but you will get lots of great opinions."

Here is a different sort of answer to your question.

There is an article featuring Nikon's lens designer, Sato, now, looking to the future. He recommends a pre-AI lens (I just got it in a post-AI version) as a star performer. Sato-san is answering your resolution question.

There is sooo much erroneous content about lenses on the web, maybe including this comment, that it is useful to carefully and repeatedly read what the people who know most about lens quality are saying. The problem is, they cannot say enough.
" Your question is not going to result in an ... (show quote)

Reply
 
 
Feb 22, 2016 15:07:14   #
megharupa8 Loc: Dallas Texas
 
Your answer is the reason I do enjoy reading this forum. Always something new to learn.



Gene51 wrote:
Where did you read that? You do realize you can't believe everything you read on the internet.

Lens image quality is a combination of contrast and acutance, and both values change with the fstop and distance to subject. There are no hard limits on acutance or contrast - some subjects have lots of both and others not. This is a pure guess, but I would imagine that even a 100mp full frame camera would do a good lens justice.

Now, there are lots of crappy lenses out there - my favorite crappy lens is the Nikon 28-300. On a D800 or comparable camera it is pretty awful - and the camera does expose and to a degree amplify it's flaws. That lens is ok on a 12 mp camera, but when I put each of 3 different copies on my D800, I thought they had all been dropped.

A lot of people love that lens - I can't understand that. Even Nikon cautions D800 owners that it will not produce the best images on that body, and as such have not included it on the list of recommended lenses for that camera.

Your question is not going to result in an answer - but you will get lots of great opinions.
Where did you read that? You do realize you can't ... (show quote)

Reply
Feb 22, 2016 15:55:32   #
travelwp Loc: New Jersey
 
SharpShooter wrote:
What would be cheaper to gain the same exact results...., one $3500 body and a bag full of cheap lenses worth $3000 or..., a $2000, 24mp body and a bag with $50,000 worth of lenses.


Everyone would select glass before body, but you are correct, there is a dollar factor that makes one compromise.

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Feb 22, 2016 16:17:49   #
travelwp Loc: New Jersey
 
forjava wrote:
Here's the URL and quotation for my above post: http://nikkor.com/technology/02.html.


Good article, thanks for sharing.

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Feb 22, 2016 17:17:58   #
forjava Loc: Half Moon Bay, CA
 
A pleasure.
travelwp wrote:
Good article, thanks for sharing.

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